1989 GAF Filter mobile filter

jacketed pressure/process vessel, most likely intended for filtration or liquid-processing service. The main chamber's 10.5 bar rating is substantial for a vessel of only 28.7 litres. The 11.2 L heating jacket is rated to 5 bar and 150 °C, allowing the contents to be heated or temperature-controlled during processing. The exact construction material is not stated on this plate, so I would not assign a stainless-steel grade from this image alone. Identification summary: GAF RB-1ASLH jacketed pressure/process vessel • Vessel No. 220 • 1989 • 28.7 L main vessel at 10.5 bar • 11.2 L heating jacket at 5 bar • both rated 150 °C • West German manufacture.